the key is when the box of cakes is produced and how many days is the shelf life (shelf life on the box).

if the production date is the day before yesterday, the shelf life is three days. That is to say, I bought the cake produced that day. The shelf life is 72 hours, and it has not expired today. Because the cake is still in the original packaging box, it will not be polluted generally (the trash can at home should be clean), so it should be edible.